tree f49b1f073dc374e8cda5da35db6ef77ddf26d911
parent 7da844c5c6fcb7a3575dd20701b481fe86918ab0
author Chris Wilson <chris@chris-wilson.co.uk> 1470293559 +0100
committer Chris Wilson <chris@chris-wilson.co.uk> 1470294568 +0100

drm/i915: Disable waitboosting for a saturated engine

If the user floods the GPU with so many requests that the engine stalls
waiting for free space, don't automatically promote the GPU to maximum
frequencies. If the GPU really is saturated with work, it will migrate
to high clocks by itself, otherwise it is merely a user flooding us with
busy-work.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470293567-10811-20-git-send-email-chris@chris-wilson.co.uk